from the dmesg command output, the most likely cause is that you have exceeded the maximum number of processes per user that you are allowed to run on your server.

To be sure, you can run:

ps -ef | grep <uid> | wc -l

and compare that number against the v.v_proc settings from the command:

sysdef -i

There will be a lot of output from “sysdef -i”, but you are looking for “v.v_proc” and “v.v_maxup”. “v.v_proc” is the max number of processes per user, and “v.v_maxup” is the max number of processes plus the reserved number for root.